package com.docker.interceptor;

import com.docker.context.BaseContext;
import com.docker.properties.JwtProperties;
import com.docker.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * jwt令牌校验的拦截器
 */
@Component
@Slf4j
public class JwtTokenUserInterceptor implements HandlerInterceptor {

    @Autowired
    private JwtProperties jwtProperties;

    /**
     * 校验jwt
     *
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("当前线程id"+Thread.currentThread().getId());
        //判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            //当前拦截到的不是动态方法，直接放行
            return true;
        }
        //1、从请求头中获取令牌
        String token = request.getHeader(jwtProperties.getUserTokenName());
        log.info("token:{}",token);

        //2、校验令牌
        try {
            log.info("jwt校验:{}", token);
            Claims claims = JwtUtil.parseJWT(jwtProperties.getUserSecretKey(), token);
            Integer userid = Integer.valueOf(claims.get("userId").toString());
            Date exp = claims.getExpiration();
            log.info("当前用户id：{}", userid);
            log.info("令牌过期时间:{}" , new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS").format(exp));
            BaseContext.setCurrentId(userid);
            //3、通过，放行
            return true;
        } catch (Exception ex) {

            log.info("令牌已过期");
            log.info(String.valueOf(ex));
            //4、不通过，响应401状态码
            response.setStatus(401);
            return false;
        }
    }
}

